Injection molding machine

Abstract

The invention provides an injection molding machine which enables maintenance technicians to carry out inspection with high efficiency. The object is an injection molding machine (1) having a plurality of air driving devices (20, 27, 30). The air-driven devices (20, 27, 30) include any two or more of an air-driven clamping device (27), an air-driven mold plate drop prevention device (20), and an air-driven shutoff nozzle device (30). In the present application, at least two or more air valves (41, 50) among air valves (41, 50) for supplying air to air drive devices (20, 27, 30) are provided in an air equipment mounting part (35), which is the same location in an injection molding machine.

Description

Technical Field

[0001] The present invention relates to an injection molding machine having air-driven devices such as a clamping device and a shut-off nozzle device driven by air. Background Art

[0002] For example, as described in Patent Document 1, an injection molding machine includes a mold clamping device, an injection device, and the like. In many cases, the injection molding machine is provided with a plurality of air-driven devices driven by air. For example, examples of the air-driven devices include a clamping device and a shut-off nozzle device. The clamping device is a device for clamping / loosening the mold of the mold clamping device. The shut-off nozzle device is a device for closing or opening the injection flow path in the injection nozzle of the injection device. Air valves are respectively provided in these air-driven devices, and the air valves are controlled by a controller.

[0003] Prior Art Documents

[0004] Patent Documents

[0005] Patent Document 1: Japanese Unexamined Patent Application Publication No. 2020-006644 Summary of the Invention

[0006] In many air-driven devices, the corresponding air valves are provided near the air-driven devices. By providing the air valves near the air-driven devices, it is possible to manage the drive object and the corresponding air equipment together. However, there are still problems to be solved. The problem is that the injection molding machine is periodically inspected by maintenance technicians, and this inspection work becomes cumbersome. The maintenance technicians focusing on the air equipment sequentially confirm the operations of a plurality of air valves, regulators, etc. However, since the plurality of air valves are dispersedly arranged in the injection molding machine, the maintenance technicians have to check the air valves while moving. That is, the inspection becomes cumbersome.

[0007] The present application provides an injection molding machine that enables maintenance technicians to perform inspections with high efficiency.

[0008] Other problems and new features will become apparent from the description of this specification and the drawings.

[0009] The present application is directed to an injection molding machine having a mold clamping device for clamping a mold, an injection device for injecting an injection material, and a plurality of air-driven devices. The air-driven devices include any two or more of an air-driven clamping device for clamping / loosening the mold, an air-driven mold dropping prevention device for preventing the mold plate of the mold clamping device from dropping, and an air-driven shut-off nozzle device. The present application is configured such that at least two or more of the air valves for supplying air to the air-driven devices are provided in an air equipment installation part that is the same part in the injection molding machine.

[0010] Advantages of the Invention

[0011] This application enables maintenance technicians to perform inspections on injection molding machines with high efficiency. Description of the Drawings

[0012] Figure 1 Side view of the vertical injection molding machine of this embodiment.

[0013] Figure 2 Rear view of the vertical injection molding machine of this embodiment.

[0014] Figure 3 Top view of the vertical injection molding machine of this embodiment.

[0015] Figure 4 Side view of the vertical injection molding machine of the comparative example.

[0016] Figure 5 Rear view of the vertical injection molding machine of the modified example of this embodiment.

[0017] Description of the Reference Numerals

[0018] 1: Vertical injection molding machine

[0019] 2: Mold clamping device

[0020] 3: Injection device

[0021] 4: Controller

[0022] 7: Base

[0023] 9: Fixed disk

[0024] 10: Upper movable disk

[0025] 12: Tie rod

[0026] 14: Turntable

[0027] 16: Heating cylinder

[0028] 17: Driving mechanism

[0029] 18: Lifting device

[0030] 20: Mold plate drop prevention device

[0031] 21: Safety rod

[0032] 22: Locking part

[0033] 23: Groove

[0034] 27: Clamping device

[0035] 30: Shut-off nozzle device

[0036] 31: Needle valve

[0037] 35: Air equipment installation part

[0038] 37: Housing

[0039] 39: Main valve

[0040] 40: Residual pressure release valve

[0041] 41: Multi-air valve unit

[0042] 43: Air supply pipe

[0043] 45: Transfer box

[0044] 47: Regulator

[0045] 48: Flow control valve

[0046] 50: Clamping air valve Detailed implementation manners

[0047] Hereinafter, the specific implementation manners will be described in detail with reference to the accompanying drawings. However, it is not limited to the following implementation manners. For the sake of clarity, the following descriptions and drawings have been appropriately simplified. In each drawing, the same elements are labeled with the same reference numerals, and repeated descriptions are omitted as needed. In addition, in order to avoid making the drawings cumbersome, there are parts where the hatching is omitted.

[0048] [This implementation manner]

[0049] <Injection molding machine>

[0050] The injection molding machine of this implementation manner is a vertical injection molding machine 1, Figure 1 and a side view is shown. The vertical injection molding machine 1 of this implementation manner has a mold clamping device 2, an injection device 3 provided above the mold clamping device 2, and a controller 4 for controlling these. As will be described in detail later, the vertical injection molding machine 1 of this implementation manner is provided with a plurality of air-driven devices 20, 27, 30 driven by air.

[0051] <Mold clamping device>

[0052] The mold clamping device 2 has a fixed disk 9 fixed to the base 7, an upper movable disk 10 disposed above the fixed disk 9, and a lower movable disk (not shown) disposed within the base 7. In this embodiment, the upper movable disk 10 and the lower movable disk are connected by three tie rods 12, 12,.... If a mold clamping mechanism (not shown) disposed between the lower movable disk and the fixed disk 9 is driven, the upper movable disk 10 is driven up and down. The mold clamping device 2 is provided with a turntable 14 above the fixed disk 9. The turntable 14 rotates 180 degrees, i.e., reverses, about one tie rod 12.

[0053] <Injection Device>

[0054] The injection device 3 is disposed above the upper movable disk 10 of the mold clamping device 2. The injection device 3 has a heating cylinder 16, a screw (not shown) disposed within the heating cylinder 16, a drive mechanism 17 for driving the screw, and lifting devices 18, 18 for lifting the entire injection device 3. The injection device 3 rotates the screw by means of the drive mechanism 17 to melt the injection material, and axially drives the screw to inject the injection material.

[0055] <Air Drive Device>

[0056] A plurality of air drive devices 20, 27, 30 provided in the vertical injection molding machine 1 of this embodiment will be described. First, a mold disk fall prevention device 20 as an air drive device 20 is provided in the mold clamping device 2. The mold disk fall prevention device 20 includes a safety rod 21 fixed to the upper movable disk 10 and a locking portion 22 provided on the fixed disk 9. A plurality of grooves 23, 23,... are formed at a prescribed interval on the safety rod 21. If the locking portion 22 is driven by air, the engaging member provided on the locking portion 22 engages with a prescribed groove 23 to prevent the upper movable disk 10 from falling. It should be noted that the engaging member is not shown in Figure 1 is not shown.

[0057] Clamping devices 27, 27,... as other air drive devices 27, 27,... are provided in the mold clamping device 2. That is, one clamping device 27 is provided on the upper movable disk 10, and two clamping devices 27, 27 are provided on the turntable 14. If air is supplied to these clamping devices 27, 27,..., a mold (not shown) will be clamped or released.

[0058] An air drive device 30 is also provided in the injection device 3. Specifically, it is a shut-off nozzle device 30. The shut-off nozzle device 30 is disposed at the top end of the heating cylinder 16 and has a needle valve 31. If air is supplied, the needle valve 31 will move forward to close the injection material flow path within the shut-off nozzle device 30. Or the needle valve 31 will move backward to open the injection material flow path.

[0059] <Air Equipment Installation Portion>

[0060] In the vertical injection molding machine 1 of the present embodiment, an air equipment for supplying air to the three air driving devices 20, 27, 30 described above, namely, the mold plate dropping prevention device 20, the clamping devices 27, 27,... and the shut-off nozzle device 30, is installed together at an air equipment installation portion 35. Regarding the vertical injection molding machine 1 of the present embodiment, Figure 3 A top view is shown. The controller 4 faces the side for taking out the molded product. The side that the controller 4 faces and is for taking out the molded product is referred to as the 180-degree side, and the opposite side is referred to as the 0-degree side. In the present embodiment, the air equipment installation portion 35 is provided on the 0-degree side of the vertical injection molding machine 1. If described in detail, as Figure 1 , Figure 2 shown, the vertical injection molding machine 1 is provided with a frame 37 equipped with a temperature control panel on the 0-degree side. An air equipment installation portion 35 including a plate-like member is provided longitudinally near the frame 37. Further, it is configured such that the air equipment installation portion 35 does not interfere with the frame 37 when the frame 37 is opened and closed, so as not to impede the maintenance of the temperature control panel. The 180-degree side of the vertical injection molding machine 1 is referred to as the first side, and the 0-degree side of the vertical injection molding machine 1 is referred to as the second side. The side facing after rotating 90 degrees clockwise from the 0-degree side is referred to as the 90-degree side. The side including the 90-degree side and facing the direction between the 0-degree side and the 180-degree side is referred to as the third side. The side facing after rotating 90 degrees clockwise from the 180-degree side is referred to as the 270-degree side. The side including the 270-degree side and facing the direction between the 180-degree side and the 0-degree side is referred to as the fourth side. The opposite side of the 90-degree side is the 270-degree side.

[0061] A plurality of air equipments are provided at the air equipment installation portion 35. As Figure 1 shown, a main valve 39 is provided on one surface (an example of the first surface) of the air equipment installation portion 35, and high-pressure air is supplied to the main valve 39 from a specified air source provided in the factory (not shown). A residual pressure release valve 40 is provided on the main valve 39, and the air is safely released when the supply of air from the factory stops, which can prevent the malfunction of the air driving devices 20, 27, 30. Further, one surface of the air equipment installation portion 35 corresponds to the fourth side of the vertical injection molding machine 1.

[0062] Near the main valve 39, a multi-air valve unit 41 that aggregates a plurality of air valves is provided. Air supply pipes 43, 43, … extend from each of the air valves constituting the multi-air valve unit 41, and the air supply pipes 43, 43, … are connected to corresponding air driving devices 20, 30, namely, the mold plate drop prevention device 20 and the shut-off nozzle device 30. In addition, for the mold plate drop prevention device 20, the air supply pipe 43 is directly connected to the air valve of the multi-air valve unit 41. However, for the shut-off nozzle device 30, the air supply pipe 43 is first connected to a relay box 45 provided near the shut-off nozzle device 30, and from the relay box 45, it is connected to the shut-off nozzle device 30. If the relay boxes 45, 45 are interposed in this way, the installation state of the air equipment and the like can be maintained even when the shut-off nozzle device 30 is removed.

[0063] In addition, regulators 47, 47 and flow control valves 48, 48 are provided for the air supply pipes 43, 43 connected to the shut-off nozzle device 30. Regarding the air supplied to the shut-off nozzle device 30, it is controlled to a desired pressure and a desired flow rate.

[0064] As Figure 2 shown, a clamping air valve 50 is provided on the other side (an example of the second side) of the air equipment installation part 35. As Figure 1 shown, air supply pipes 43, 43 extend from the clamping air valve 50, and they are connected to relay boxes 45, 45 respectively provided on the upper movable platen 10 and the turntable 14. Moreover, the air supply pipes 43, 43 are connected from these relay boxes 45, 45 to the clamping devices 27, 27, …. The vertical injection molding machine 1 of the present embodiment has many air equipment provided at one air equipment installation part 35 like this. Therefore, when performing maintenance such as inspection on the air equipment, it can be carried out efficiently. In addition, the other side of the air equipment installation part 35 corresponds to the third side of the vertical injection molding machine 1.

[0065] [Comparative Example]

[0066] The vertical injection molding machine 101 of the comparative example will be described using Figure 4 The vertical injection molding machine 101 of the comparative example also generally includes a mold clamping device 102, an injection device 103, a controller 104, etc. A plurality of air driving devices 120, 127, 130 are also provided in the vertical injection molding machine 101 of the comparative example. First, a mold plate drop prevention device 120 is provided, which includes a safety rod 121 provided on the upper movable platen 110 of the mold clamping device 102 and a locking part 122 provided on the fixed platen 109. Moreover, clamping devices 127, 127, … are respectively provided on the upper movable platen 110 and the turntable 114. In addition, a shut-off nozzle device 130 having a needle valve 131 is provided on the heating cylinder 116 of the injection device 103.

[0067] In the vertical injection molding machine 101 of the comparative example, the air equipment that supplies air to these air drive devices 120, 127, and 130 is separately arranged. The air valve 151 that supplies air to the mold plate fall prevention device 120 is housed in the base 107. Moreover, the air valve 152 that supplies air to the shut-off nozzle device 130 is provided in the safety cover 155. The air valve 153 that supplies air to the clamping devices 127, 127,... is provided on the back surface of the frame 137 equipped with the temperature control panel. Thus, since the air equipment is separately arranged in the vertical injection molding machine 101 of the comparative example, when performing maintenance such as inspection on the air equipment, the maintenance technician needs to perform it while moving. The maintenance becomes cumbersome.

[0068] [Modification Example of the Present Embodiment]

[0069] Utilize Figure 5 The modification example of the present embodiment will be described. In the vertical injection molding machine 1A of the modification example, only a part of the configuration is different from that of the vertical injection molding machine 1 of the present embodiment (refer to Figure 1 , Figure 2 ), and it is generally configured in the same manner as the vertical injection molding machine 1 of the present embodiment. Therefore, the same reference numerals are given to the components having the same configuration and the same function, and the description thereof is omitted. In the vertical injection molding machine 1A of the modification example of the present embodiment, the air equipment mounting portion 35A is deformed. Specifically, the back surface of the frame 37 equipped with the temperature control panel is the air equipment mounting portion 35A. That is, various air equipment, namely the main valve 39, the multi-air valve unit 41, the clamping air valve 50, the regulator 47, etc., are provided on the back surface of the frame 37. In other words, in the vertical injection molding machine 1A of the modification example, the air equipment is provided together on the third side. Also in the vertical injection molding machine 1A of the modification example, since the air equipment is provided together in one air equipment mounting portion 35A, maintenance can be easily performed.

[0070] [Other Modification Examples]

[0071] The vertical injection molding machine 1 of the present embodiment can also be modified in other ways. For example, in the present embodiment, it is described that all the air equipment is provided in the air equipment mounting portion 35 (refer to Figure 1 , Figure 2)。However, part of the air equipment can also be installed elsewhere, as long as there are two or more air valves 41, 50 provided in the air equipment installation section 35. This can reduce the burden of maintenance work. In addition, in the vertical injection molding machine 1 of the present embodiment, it is described that three air driving devices 20, 27, 30 are provided. However, it is not necessary to provide all of these air driving devices 20, 27, 30, and at least two of them are sufficient. Because at least two air valves 41, 50 can be provided in the air equipment installation section 35. In addition, in the present embodiment, it is described that the vertical injection molding machine 1 is provided with a frame 37 equipped with a temperature control panel on the 0-degree side (second side). However, as the frame provided on the 0-degree side (second side), it is also possible to replace the frame 37 equipped with the temperature control panel or, on the basis of the frame 37 equipped with the temperature control panel, provide other frames, such as a power-related frame equipped with a servo amplifier and a power supply device. In this case, the air equipment installation section 35 is arranged at a position that does not interfere with the opening and closing of the frame when the frame is opened and closed.

[0072] The present embodiment has been described using the vertical injection molding machine 1 of the present embodiment. However, the same can be implemented even for a horizontal injection molding machine. That is, if an air equipment installation section 35 is provided and the air equipment related to a plurality of air driving devices 20, 27, 30 is arranged together, maintenance can be easily implemented in the same way.

[0073] As described above, the invention completed by the inventors of the present application has been specifically described based on the embodiments. However, it goes without saying that the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist thereof. The multiple examples described above can also be implemented by appropriate combination.

Claims

1. An injection molding machine, characterized in that, comprising: a mold clamping device for clamping the mold; an injection device for injecting injection material; and a plurality of air-driven devices, wherein the air-driven devices include any two or more of an air-driven clamping device, an air-driven mold plate dropping prevention device, and an air-driven shut-off nozzle device, wherein the clamping device is installed on the mold clamping device and clamps / releases the mold, the mold plate dropping prevention device prevents the mold plate of the mold clamping device from dropping, and the shut-off nozzle device is provided on the injection device, at least two or more air valves for supplying air to the air-driven devices are provided in an air equipment installation part which is the same part.

2. The injection molding machine according to claim 1, characterized in that, The injection molding machine is a vertical injection molding machine.

3. The injection molding machine according to claim 1 or 2, characterized in that, The injection molding machine has a main valve, and air supplied from the outside is supplied to the air valve via the main valve, and the main valve is provided in the air equipment installation part.

4. The injection molding machine according to claim 1 or 2, characterized in that, Regarding the air-driven device with the air valve provided in the air equipment installation part, its regulator, residual pressure release valve, and flow regulating valve are provided in the air equipment installation part.

5. The injection molding machine according to claim 2, wherein The vertical injection molding machine has a controller. When the side toward which the controller faces and is the side for taking out the molded product is set as the 180-degree side, and the opposite side of the 180-degree side is set as the 0-degree side, the air equipment installation part is provided on the 0-degree side.

6. The injection molding machine according to claim 5, characterized in that, The vertical injection molding machine has a frame containing a temperature control panel arranged on the 0-degree side, and a plate-like member is arranged longitudinally near the frame, and the plate-like member is the air equipment installation part.

7. The injection molding machine according to claim 6, characterized in that, The vertical injection molding machine has a power-related frame provided with a servo amplifier and a power supply device on the 0-degree side, and the plate-like member is arranged at a position where it will not interfere with the opening and closing of the power-related frame when the power-related frame is opened and closed.

8. The injection molding machine according to claim 5, wherein The vertical injection molding machine has a frame containing a temperature control panel arranged on the 0-degree side, and the back surface of the frame is the air equipment installation part.

9. The injection molding machine according to claim 1, characterized in that, The injection molding machine is a vertical injection molding machine, the vertical injection molding machine has a controller, the controller faces the first side for taking out the molded product, and the opposite side of the first side is the second side, and the air equipment installation part is provided on the second side.

10. The injection molding machine according to claim 9, characterized in that, The vertical injection molding machine has: a frame arranged on the second side and containing a temperature control panel; and a plate-like member arranged longitudinally near the frame, and the plate-like member is the air equipment installation part.

11. The injection molding machine according to claim 10, characterized in that, The vertical injection molding machine has a power-related frame provided with a servo amplifier and a power supply device on the second side, and the plate-like member is arranged at a position where it will not interfere with the opening and closing of the power-related frame when the power-related frame is opened and closed.

12. The injection molding machine according to claim 9, characterized in that, The vertical injection molding machine has a frame containing a temperature control panel arranged on the second side, the back surface of the frame facing the third side is the air equipment installation part, and the third side faces the direction of a position between the first side and the second side.

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